Path: csiph.com!usenet.pasdenom.info!weretis.net!feeder4.news.weretis.net!ecngs!feeder2.ecngs.de!newsfeed.freenet.ag!news2.euro.net!newsfeed.xs4all.nl!newsfeed6.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.001 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'argument': 0.04; 'mrab': 0.05; 'function,': 0.07; 'accepts': 0.09; 'arguments,': 0.09; 'braces': 0.09; 'friday,': 0.09; 'subject:not': 0.11; '(the': 0.15; '":"': 0.16; '"to': 0.16; 'attributes.': 0.16; 'braces,': 0.16; 'examples:': 0.16; 'from:addr:mrabarnett.plus.com': 0.16; 'from:addr:python': 0.16; 'from:name:mrab': 0.16; 'message- id:@mrabarnett.plus.com': 0.16; 'received:84.93': 0.16; 'received:84.93.230': 0.16; 'subscripting': 0.16; 'string': 0.17; 'wrote:': 0.17; 'example.': 0.17; 'skip:{ 20': 0.17; 'specify': 0.17; '>>>': 0.18; 'header:In-Reply-To:1': 0.25; 'header:User- Agent:1': 0.26; 'format,': 0.27; "doesn't": 0.28; 'decimal': 0.29; 'josh': 0.29; 'received:192.168.1.3': 0.29; 'no,': 0.29; 'sense': 0.31; 'received:84': 0.32; 'print': 0.32; '"")': 0.33; 'right?': 0.33; 'to:addr:python-list': 0.33; "can't": 0.34; 'method': 0.36; 'thank': 0.36; 'subject:: ': 0.38; 'to:addr:python.org': 0.39; 'received:192': 0.39; 'skip:" 10': 0.40; 'received:192.168': 0.40; 'you.': 0.61; 'between': 0.63; 'more': 0.63; 'here': 0.65; 'therefore': 0.65; 'header:Reply-To:1': 0.68; 'reply-to:no real name:2**0': 0.72; "'foo'": 0.84; 'reply-to:addr:python.org': 0.84; 'hand,': 0.97 X-CM-Score: 0.00 X-CNFS-Analysis: v=2.0 cv=AYoz7grG c=1 sm=1 a=0nF1XD0wxitMEM03M9B4ZQ==:17 a=YsUzL_8ObRgA:10 a=6IlhpU6xNbwA:10 a=ihvODaAuJD4A:10 a=OUOv7kDek9cA:10 a=8nJEP1OIZ-IA:10 a=EBOSESyhAAAA:8 a=8AHkEIZyAAAA:8 a=4p39GhNCSa4-_8gMPt8A:9 a=wPNLvfGTeEIA:10 a=0nF1XD0wxitMEM03M9B4ZQ==:117 X-AUTH: mrabarnett:2500 Date: Fri, 29 Jun 2012 18:41:29 +0100 From: MRAB User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:13.0) Gecko/20120614 Thunderbird/13.0.1 MIME-Version: 1.0 To: python-list@python.org Subject: Re: format() not behaving as expected References: <7d1714cb-7aea-4048-bdc5-1b65d0f6c109@googlegroups.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.12 Precedence: list Reply-To: python-list@python.org List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 35 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1340991688 news.xs4all.nl 6885 [2001:888:2000:d::a6]:41406 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:24671 On 29/06/2012 18:19, Josh English wrote: > On Friday, June 29, 2012 10:02:45 AM UTC-7, MRAB wrote: >> >> The ".format" method accepts multiple arguments, so the placeholders in >> the format string need to specify which argument to format as well as >> how to format it (the format specification after the ":"). >> >> The "format" function, on the other hand, accepts only a single >> argument to format, so it needs only the format specification, and >> therefore can't accept subscripting or attributes. >> >> >>> c = "foo" >> >>> print "{0:s}".format(c) >> foo >> >>> format(c, "s") >> 'foo' > > Thank you. That's beginning to make sense to me. If I understand this, > everything between the braces is the format specification, > and the format specification doesn't include the braces, right? > No, the format specification is the part after the ":" (if present), as in the example. Here are more examples: >>> c = "foo" >>> print "{0}".format(c) foo >>> format(c, "") 'foo' >>> print "To 2 decimal places: {0:0.2f}".format(1.2345) To 2 decimal places: 1.23 >>> print format(1.2345, "0.02f") 1.23